Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS5691027 A
Publication typeGrant
Application numberUS 08/536,192
Publication dateNov 25, 1997
Filing dateSep 29, 1995
Priority dateJul 27, 1993
Fee statusLapsed
Publication number08536192, 536192, US 5691027 A, US 5691027A, US-A-5691027, US5691027 A, US5691027A
InventorsCarey J. Eckhardt, Bradley D. Zinke
Original AssigneeMinnesota Mining And Manufacturing Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fastener with a dual purpose cover sheet
US 5691027 A
Abstract
The invention relates to a fastener member having a dual purpose cover sheet. The fastener member includes a base sheet, a plurality of engaging members projecting from the base sheet, a layer of pressure sensitive adhesive on an opposite surface of a base sheet, and a dual purpose cover sheet. The dual purpose cover sheet protects the adhesive layer of a first fastener member, and the engaging members of a second, underlying fastener member.
Images(4)
Previous page
Next page
Claims(19)
We claim:
1. A fastener arrangement, comprising:
a) a first fastener member, comprising:
i) a base sheet having a first major surface; and
ii) a plurality of engaging members attached to and projecting from the first major surface;
b) a dual purpose cover sheet having first and second major surfaces, the first major surface including means for releasable affixation to the engaging members of the first fastener member, to affix the cover sheet to the first fastener member; and
c) a second fastener member overlying said first fastener member, comprising:
i) a base sheet having first and second major surfaces;
ii) a multiplicity of engaging members attached to and projecting from the first major surface;
iii) a layer of pressure sensitive adhesive interposed between the second major surface of said base sheet and said second major surface of said cover sheet, for releasably affixing the second fastener member to said cover sheet.
2. The fastener arrangement of claim 1, wherein said first and second fastener members and said cover sheet are wound on core, and said first and second fastener members are spaced portions of a unitary, longitudinally extending fastener member.
3. The fastener arrangement of claim 1, wherein said arrangement is a stack of individual fastener members having alternating layers of fastener members and dual purpose cover sheets.
4. The fastener arrangement of claim 1, wherein the pressure sensitive adhesive is selected from the group consisting of styrene-butadiene-styrene rubber adhesives, styrene-isoprene-styrene rubber adhesives, and acrylic adhesives.
5. The fastener arrangement of claim 1, wherein the engaging members in element (a) comprise a plurality of hook members, and the means for releasable affixation in element (b) comprises a plurality of loop members and wherein the affixation force between said first fastener and said cover sheet is greater than the affixation force between said second fastener member and said cover sheet.
6. The fastener arrangement of claim 1, wherein the engaging members in element (a) a plurality of loop members, and for releasable affixation in element (b) comprises a plurality of hook members and wherein the affixation force between said first fastener and said cover sheet is greater than the affixation force between said second fastener member and said cover sheet.
7. The fastener arrangement of claim 1, wherein the dual purpose cover sheet comprises polypropylene.
8. The fastener arrangement of claim 1, where in the base sheet comprises fibers selected from a group consisting of woven fibers and knitted fibers.
9. The fastener arrangement of claim 1, wherein the base sheet is formed from an extruded polymer.
10. The fastener arrangement of claim 1, wherein the engaging members of the first fastener member comprise a first structure surface, and the means for releasable affixation to the engaging members comprises a second structured surface adapted for intermeshing engagement with the first structured surface, wherein said structured surfaces of said first fastener member and said cover sheet each including a plurality of solid tapered elements, each element having at least one side inclined relative to a common plane in each of said first fastener member and said cover sheet at an angle sufficient to form a taper so that said element of said first fastener member may mesh with said elements of said cover sheet when brought into contact with one another and said cover sheet may be releasably affixed to said first fastener member at least partially because of the frictional force of adherence of said contacting sides of said elements of said first fastener member and said elements of said cover sheet and wherein the tangent of the half angle of the tapered sides of the element is no greater than the coefficient of friction of the material of the contacting surfaces.
11. The fastener arrangement of claim 1, wherein the dual purpose cover sheet comprises tape having a layer of pressure sensitive adhesive on one major surface thereof, whereby the pressure sensitive adhesive layer of the tape affixes the cover sheet to the engaging members.
12. The fastener arrangement of claim 1, wherein said second major surface of the dual purpose cover sheet includes means for facilitating release of the pressure sensitive adhesive layer of the second fastener member.
13. The fastener arrangement of claim 12, wherein said release means comprises a surface selected from a group consisting of a low adhesion backsize layer, a silicone layer, a Teflon™ layer, and a low energy surface layer.
14. The fastener arrangement of claim 13, wherein said release means is selected to enable the second fastener member to be removed from the fastener arrangement while the dual purpose cover sheet remains affixed to the engaging members of the first fastener member.
15. The fastener arrangement of claim 1, wherein said means for releasable affixation of the first fastener member to said cover sheet includes an adhesive coated on said first major surface of said cover sheet.
16. The fastener arrangement of claim 15, whereto said adhesive coated on said first major surface of said cover sheet is a pressure sensitive adhesive.
17. The fastener arrangement of claim 15, wherein said adhesive coated on said first major surface of said cover sheet is coated substantially continuously over said first major surface.
18. The fastener arrangement of claim 1, wherein said adhesive layer releasably adheres the second fastener member directly to the second major surface of said cover sheet.
19. A fastener arrangement, comprising:
a first fastener member, comprising a base sheet having a first major surface and a plurality of engaging members attached to and projecting from the first major surface;
a dual purpose cover sheet having first and second major surfaces, the first major surface including means for releasable affixation to the engaging members of the first fastener member to affix the cover sheet to the first fastener member, and the second major surface including means for facilitating release of a pressure sensitive adhesive layer; and
a second fastener member overlying said first fastener member, comprising a base sheet having first and second major surfaces, a multiplicity of engaging members attached to and projecting from the first major surface, and a layer of pressure sensitive adhesive interposed between the second major surface of said base sheet and said second major surface of said cover sheet for releasably affixing the second fastener member to said cover sheet.
Description

This is a continuation of application Ser. No. 08/097,984 filed Jul. 27, 1993 now abandoned.

TECHNICAL FIELD

The invention relates to fastener member having a dual purpose cover sheet.

BACKGROUND OF THE INVENTION

Interengaging and intermeshing fastener members are useful in a variety of fields for fastening two objects together. For example, hook and loop fasteners typically include a first fastener member having a base sheet and a plurality of hook members projecting therefrom, and a second fastener member having a base sheet and a plurality of loop members projecting therefrom. When engaged, the hook members catch the loop members to secure the two fastener members together. For purposes of the present invention, a fastener consists of two fastener members, which may or may not be identical. For example, a hook and loop fastener includes a hook fastener member and a loop fastener member.

Exemplary of other fasteners of a similar type are those shown in U.S. Pat. Nos. 3,009,235, 4,454,183, 4,761,318, 4,775,310, 4,894,060, and 5,058,247, which generally disclose a first fastener member having a base sheet and a plurality of headed stems, and a second fastener member having a base sheet and a plurality of loop members. The respective fastener members are secured together in much the same way as hook and loop fasteners, whereby the headed stems engage or catch the loop members to interengage the two fastener members.

Fasteners of the type described above are often most useful when each fastener member is attached to a surface of an object, so that the two objects may be joined together by engaging the respective fastener members. Examples of such applications include fasteners for securing two portions of an article of clothing together, or for securing a piece of trim to a surface. One popular method of attaching the respective fastener members to a surface is to provide a layer of pressure sensitive adhesive on the base sheet, such that the fastener member may be adhered to the surface of the object by the pressure sensitive adhesive. FIG. 1 illustrates such a conventional construction.

As shown in FIG. 1, a fastener member 10 includes a base sheet 12 and a plurality of engaging members 14 (in the form of hooks) that project from the base sheet. Disposed on an opposite major surface of the base sheet 12 is a layer of pressure sensitive adhesive 16, which typically includes a release liner 18 to protect adhesive layer 16 prior to application of the fastener member 10 to a surface. To apply the fastener member 10 to a surface of an object, release liner 18 may be peeled away from the base sheet to expose the adhesive layer 16.

A cover sheet is also provided to prevent the engaging members from contacting and engaging with a surface unintentionally. For example, hook members have a tendency to engage with fabrics and textile materials, and thus a fastener member including hook members may unintentionally become attached to clothing or other fabric prior to use, which is undesirable. A cover sheet 20, shown in FIG. 1, covers the engaging members 14 and thus aids in preventing unintentional engagement of the engaging members with a surface prior to use. Thus, both the cover sheet 20 and the release liner 18 must be removed before the fastener member may be used.

A fastener of the foregoing construction has been used in the field of carpet application. Specifically, a fastener member may be used to anchor carpet to a floor near a wall, or along a seam between adjacent sections of carpet. Loop-like textile structures are provided on the back of the carpet, and engaging members are provided on the fastener member to engage the loop-like structures and affix the carpet to the floor.

An example of a fastener used in conjunction with carpet is shown in FIGS. 2A through 2D. Fastener member 10 may be applied to a surface, such as a floor 30, by removing the release liner 18 and pressing the adhesive layer 16 into contact with the floor. Cover sheet 20 is typically left attached to the engaging members 14 while the carpet is being positioned and cut to size. Cover sheet 20 thus prevents unintentional engagement between the fastener member and the carpet while the carpet is being manipulated in the vicinity of the fastener member. Furthermore, the engaging members are protected from contamination or damage due to exposure to people, dust, paint, fabrics, and the like. When the carpet 32 has been cut and fit into place, cover sheet 20 may be peeled away from fastener 10, allowing loop structures 34 of carpet 32 to engage the engaging members 14. Such a fastening arrangement, in addition to affixing the carpet to the floor, also allows the carpet to be peeled away from the fastener member for cleaning or replacement.

Although the fastener product described above is widely used, it would be desirable to reduce material costs inherent in the product. Furthermore, because both the release liner and the cover strip must both be removed prior to the application of the fastener member, the application process can be relatively time consuming, and therefore expensive. It is also desirable to reduce waste associated with all products that are used by consumers. In view of these concerns, it is desirable to provide an inexpensive fastener member that is useful for applications such as those described above.

SUMMARY OF THE INVENTION

A fastener arrangement is disclosed, comprising a first fastener member, including a base sheet having a first major surface, and a plurality of engaging members attached to and projecting from the first major surface. The arrangement also includes a dual purpose cover sheet having first and second major surfaces, the first major surface including means for releasable affixation to the engaging members of the first fastener member, to affix the cover sheet to the first fastener member, and a second fastener member overlying the first fastener member. The second fastener member includes a base sheet having first and second major surfaces, a multiplicity of engaging members attached to and projecting from the first major surface, and a layer of pressure sensitive adhesive disposed on the second major surface of said base sheet. The layer of pressure sensitive adhesive releasably affixes the second fastener member to the second major surface of said cover sheet. In one embodiment, the first and second fastener members and the cover sheet are wound on core, and the first and second fastener members are spaced portions of a unitary, longitudinally extending fastener member.

Also provided is a method of providing a fastener arrangement. The method comprises the steps of providing a first fastener member, including a base sheet having first and second major surfaces, and a plurality of engaging members attached to and projecting from the first major surface; providing a dual purpose cover sheet having first and second major surfaces; releasably affixing the first major surface of the cover sheet to the engaging members of the first fastener member; providing a second fastener member, including a base sheet having first and second major surfaces, a plurality of engaging members attached to and projecting from the first major surface, and a layer of pressure sensitive adhesive disposed on the second major surface; and releasably affixing the pressure sensitive adhesive layer of the second fastener member to the second major surface of the cover sheet.

In another aspect the invention includes within its scope a method of applying a fastener member to a surface, comprising the steps of providing a fastener arrangement including a fastener member including a base sheet having first and second major surfaces, a plurality of engaging members attached to and projecting from the first major surface, and a layer of pressure sensitive adhesive disposed on the second major surface, a dual purpose cover sheet having first and second major surfaces, the first major surface including means for releasable affixation to the engaging members of the fastener member, and a core on which the fastener member and dual purpose cover sheet are wound, wherein the pressure sensitive adhesive layer of the fastener member is releasably applied to the core, and the cover sheet is releasably affixed to the engaging members, and the fastener member and the cover sheet are wound onto the core so that layers of the fastener member alternate with layers of the cover sheet; withdrawing from the core a length of the fastener member with the cover sheet attached to the engaging members thereof, such that the adhesive layer releases from the cover sheet attached to an underlying layer of the fastener member; applying the length of fastener member to the surface by contacting the pressure sensitive adhesive layer to the surface; and removing the cover sheet from the engaging members of the length of fastener member.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further explained with reference to the appended Figures, wherein like structure is referred to by like numerals throughout the several views, and wherein:

FIG. 1 is a sectional view of a fastener member having a cover sheet and a release liner according to the prior art;

FIGS. 2A through 2D are sectional views of sequential steps in the process of applying a conventional fastener member to a surface;

FIG. 3 is a sectional view of a fastener arrangement including a fastener member having a dual purpose cover sheet according to the present invention;

FIGS. 4 through 7 are sectional views of alternate embodiments of the fastener member and dual purpose cover sheet of the present invention;

FIG. 8 is a sectional view of an alternate fastener arrangement according to the present invention; and

FIG. 9 is a perspective view of an exemplary engaging member for use with the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates broadly to a fastener member having a dual purpose cover sheet. The dual purpose cover sheet functions both to be releasably affixed to the engaging members of a first fastener member, and to be releasably affixed to a pressure sensitive adhesive layer of a second, overlying fastener member. Thus, the single cover sheet of the present invention replaces the cover sheet and release liner of the prior art, with a concomitant savings in time, cost, and waste.

A preferred embodiment of the invention is illustrated in FIG. 3. Fastener member 100 is provided, including a base sheet 102, a plurality of engaging members 104, a layer of pressure sensitive adhesive 106, and a dual purpose cover sheet 108. Each of the various components will be described individually, followed by a description of the overall structure and operation of the present invention. The numeric ranges for various values provided herein are intended only to be illustrative, rather than limiting, of the present invention.

Base Sheet: The base sheet may be made from any suitable material and in any suitable size. For example, the base sheet may be made of polymer (e.g. polyethylene, polypropylene, polyester, nylon, or rubber), textile materials (e.g. cotton), or metal. The base sheet may be extruded, woven, knitted, stitched, or made of a nonwoven or other material, and may be made of two or more of these and other materials (e.g. a laminate, or a blend). The thickness of such a base sheet is preferably between 0.127 and 3.810 mm (0.005 and 0.150 in). The width of the base sheet may be selected as desired, and widths in the range of 0.635 to 365 cm (0.250 to 144 in) can be used.

The dimensions and material for the base sheet are preferably selected so that the base sheet is flexible, to facilitate attachment of the fastener member to uneven surfaces. Furthermore, a fastener member having a flexible base sheet may be coiled around a core 110 to form a roll. However, rigid base sheets may also have applicability in the context of the invention in, for example, a stack of individual fastener members, as shown in FIG. 8.

The base sheet performs at least two functions. First, the base sheet must hold the engaging members in place, so that the engaging members are not detached from the base sheet when the attached fastener members are separated from each other. Second, the base sheet must provide a surface for receipt of the layer of pressure sensitive adhesive. This surface may be smooth, striated, knurled, wavy or of any other suitable topographical design.

Engaging Members: The engaging members of the present invention may be one or more of many different types of such members. For example, the engaging members may comprise hook portions, loop portions, structured surfaces, headed stems, woven or nonwoven fibers, or any other suitable structures. Hook portions and loop portions such as those disclosed in U.S. Pat. Nos. 3,009,235, 4,761,318, 4,775,310, 4,894,060, and 5,067,210, the contents of each of which is hereby incorporated by reference, may have utility in this regard. Similarly, structured surfaces such as those disclosed in U.S. Pat. Nos. 4,875,259, 5,088,164, and 5,196,266, the contents of each of which is hereby incorporated by reference, are exemplary, and may be useful in the context of the present invention. Headed stems are disclosed in patents such as U.S. Pat. Nos. 3,138,841, 4,290,174, and 4,454,183, the contents of each of which is hereby incorporated by reference, and also may have utility in conjunction with the present invention. Other suitable engaging members are also contemplated.

The various engaging members are attached to, bonded to, or formed from the base sheet, and should be suitable for engaging an opposed fastener member, as described previously. The opposed fastener may be identical to or different from the subject fastener member, depending on the relative configurations and performance characteristics of each.

Adhesive Layer: The adhesive layer is disposed on the major surface of the base sheet opposite the engaging members. Adhesives that may be useful as the adhesive layer in the present invention include pressure sensitive and non-pressure sensitive adhesives. The former class of adhesives are preferred, and are normally tacky at room temperature, and can be adhered to a surface by the application of light finger pressure. The latter class of adhesives include those that are solvent, heat, or radiation activated. The adhesives may be based on, for example, general compositions of polyacrylate, polyvinyl ether, rubber (e.g. natural rubber), isoprene, polychloroprene, butyl rubber, polyisobutylene, butadiene-acrylonitrile polymer, thermoplastic elastomer, styrenebutadiene polymer, poly-alpha-olefin, amorphous polyolefin, silicone, ethylene-containing copolymer (e.g. ethylene vinyl acetate, ethylene ethyl acrylate, ethylene n-butyl acrylate, and ethylene methyl acrylate), polyurethane, polyamide, epoxy, polyvinylpyrrolidone and polyvinylpyrrolidone copolymers, polyesters, and mixtures or copolymers of the foregoing. The adhesive layer may also contain, for example, tackifiers, plasticizers, fillers, antioxidants, stabilizers, pigments, curatives, crosslinkers, solvents, and the like.

The thickness of the layer of pressure sensitive adhesive may be selected as desired. Thicknesses in the range of 0.0025 to 0.102 cm (0.001 to 0.040 in) have been shown to have utility in the context of the present invention, although other adhesive layer thicknesses may also be used for certain applications. The adhesive layer may be applied to the base sheet as known in the art. For example, the adhesive may be applied to the base sheet by solvent coating, extrusion (either separately from or simultaneously with the base sheet), hot melt coating, calendaring, curtain coating, gravure or pattern coating, spray coating, lamination, pressure feed die coating, knife coating, or by any other suitable technique. It is expressly contemplated that the adhesive layer can be either continuous (such as a uniform layer) or discontinuous (such as strips or bands, dots, or another patterned or random arrangement of discrete adhesive portions).

Although a single layer of adhesive is preferred, one or more additional layers may also be provided. These additional layers may be provided between the adhesive layer and the base sheet (e.g. a primer layer to facilitate bonding between the adhesive layer and the base sheet), or may be applied over the adhesive layer (e.g. an antistatic layer, a low adhesion backsize (LAB), or a detackifying agent), or both. Of course, multiple layers of adhesive are also contemplated.

The particular characteristics of the adhesive layer may be selected to provide appropriate adhesion and release characteristics. In carpet applications, for instance, it may be desirable to provide an adhesive layer that is highly resistant to removal from the surface to which the fastener member is attached. The characteristics of various adhesives are well known, and thus a suitable adhesive may be selected for a particular application.

Dual Purpose Cover Sheet: The dual purpose cover sheet is preferably made of a thin, flexible material having two opposed major surfaces. The first major surface should be suitable for releasable affixation to the engaging members, and the second major surface should be suitable for releasable affixation to the pressure sensitive adhesive layer.

The first major surface of the dual purpose cover sheet may comprise any suitable material that may be releasably affixed to the engaging members. For example, if the engaging members comprise hook structures, the first major surface may include a plurality of loop structures for engagement with the hook structures. Alternatively, the first major surface may comprise a pressure sensitive adhesive to enable adhesive affixation between the cover sheet and the engaging members. The means for releasably affixing the cover sheet to the engaging members may be continuous (a uniform arrangement of loop members, for example) or discontinuous (narrow bands or dots of adhesive, or discrete sections of loop members, for example).

The second major surface of the dual purpose cover sheet is adapted for releasable engagement with the pressure sensitive layer described above. The second major surface may comprise, for example, a release coating such as silicone, an LAB coating (such as that described in U.S. Pat. No. 2,532,011 (Dahlquist et al.)), a plasma coating, a Teflon™ coating, a structured surface, a low energy polymeric surface, fluorocarbon additives, or no coating or structure at all. Again, these and other release features of the second major surface are preferably continuous over the area of the surface.

The dimensions of the dual purpose cover sheet may be selected to suit the particular application. It is preferred that the dual purpose cover sheet be approximately 0.012 to 1.78 mm (0.0005 to 0.070 in) thick, and that the cover sheet be at least as wide as the wider of the pressure sensitive adhesive layer and the plurality of engaging members. For carpet fastening applications, the dual purpose cover sheet is preferably thin, flexible, and tear resistant, so that the cover sheet may be withdrawn through a thin seam between sections of carpet, or along a wall. Furthermore, the adhesion between the cover sheet and the engaging members should be sufficient to insure that the cover sheet is not inadvertently peeled away from the fastener.

Suitable materials for the dual purpose cover sheet may include, but are not limited to, treated or untreated paper (e.g. crepe, rope tissue, repulpable tissue, and kraft), woven fabric (e.g. cotton, rayon, polyester, glass, and nylon), polymeric film (e.g. cellophane, acetate, polyester, vinyl, polyvinyl chloride, polypropylene, polyethylene, and polyimide), nonwoven fabric, foil (e.g. aluminum, stainless steel, and lead), foam (e.g. open and closed cell polyethylene, polyvinyl chloride, polyurethane, and polychloroprene), rubber (e.g. neoprene), metallized film, or combinations or laminates of the foregoing. The cover sheet may also include fibers, fillers, plasticizers, pigments, stabilizers, antioxidants, or mixtures thereof. The cover sheet may additionally bear a primer layer, or be surface treated (e.g. corona discharge treated) to promote adhesion of other constituents to it. Alternatively or additionally, the cover sheet may undergo an orientation processing step to improve its tensile strength characteristics, or be coated with an LAB to prevent bonding or transfer of the adhesive. The LAB may be selected to facilitate removal of the fastener member from the dual purpose cover sheet, and may not be necessary for some adhesives. Also, an antistatic agent may be incorporated into the cover sheet, to prevent accumulation of static electricity on the sheet.

It should be noted that in the preferred embodiment, the characteristics of the dual purpose cover sheet are selected so that the cover sheet remains affixed to the engaging members of the underlying fastener member, rather than to the adhesive layer of the overlying fastener member, when the two are peeled apart. That is, the cover sheet should preferably release from the pressure sensitive adhesive layer and remain attached to the engaging members of the underlying layer of the fastener member. Stated yet another way, the adhesion force between the cover sheet and the layer of pressure sensitive adhesive is preferably less than the affixation force between the cover sheet and the engaging members of an adjacent fastener member. For example, a combination of adhesive and cover sheet may be selected such that the adhesive layer separates from the underlying cover sheet at a force of 24.6 g/cm width (0.138 lb/in width), and the cover sheet separates from the engaging members at a force of 70 g/cm width (0.38 lb/in width). These illustrative disengagement forces were measured on a fastener member of the construction described below in Example One.

The force required to separate the fastener member from the underlying dual purpose cover sheet may also be greater than the force required to separate the cover sheet from the underlying engaging members. In the case of the construction shown in FIG. 3, using a fastener and cover sheet such as that described in Example Five, the force required to separate the fastener member and adhesive layer from the cover sheet was approximately 258 g/cm width (1.44 lbs/in). The force required to separate the cover sheet from the underlying engaging members was approximately 20.9 g/cm width (0.12 lbs/in). However, because the fastener member was wound in a coil, the tensile forces in the cover sheet prevented the cover sheet from being lifted away from the engaging members when the overlying fastener member was peeled from the roll. Thus, the relationship of the two force levels (between fastener member and cover sheet, and between cover sheet and engaging members) may be selected as desired.

Various embodiments of the inventive fastener member are illustrated in FIGS. 4 through 7. FIG. 4 shows an embodiment wherein the engaging members comprise a plurality of loop structures 120, which are attached to a base sheet 122 having a layer of pressure sensitive adhesive 124 disposed on the opposite surface. Dual purpose cover sheet 126 includes a plurality of hook structures 128 adapted for releasable interengagement with the loop structures.

FIG. 5 shows an embodiment wherein the engaging members comprise a structured surface 130, which is attached to a base sheet 132 having a layer of pressure sensitive adhesive 134 disposed on the opposite surface. Although structured surface 130 and base sheet 132 are shown as being discrete components, they could instead be unitary. Dual purpose cover sheet 136 includes an opposed, matching structured surface 138, which is adapted to intermesh with structured surface 130 to secure the cover sheet. The respective structured surfaces may have one of many different patterns, which need not necessarily match each other.

The embodiments shown in FIGS. 6 and 7 include engaging members that are generally shaped as headed stems 140, which each include a stem 142 that projects from base sheet 144, and a head 146 formed at the distal end of stem 142. A layer of pressure sensitive adhesive 145 is provided on the opposite surface of base sheet 144. Heads 146 may be hemispherical, conical, or some other suitable shape, as known in the fastener art. The dual purpose cover sheet may include loop structures 148 anchored to a base sheet 150, as shown in FIG. 6, or mating headed stems 152 anchored to a base sheet 154, as shown in FIG. 7.

The dual purpose cover sheet of the present invention has primary, although not exclusive, applicability to fastener members provided in roll form, as shown in FIG. 3. In the context of the embodiment shown in FIG. 3, a first fastener member and a second fastener member may be spaced portions of a unitary, longitudinally extending fastener member, rather than individual, discrete fastener members. Other fastener arrangements, such as the stack arrangement shown in FIG. 8, with the dual purpose cover sheet 160 disposed between adjacent fastener members 162, are also included within the scope of the present invention.

The operation of the present invention will be better understood with reference to the following Examples.

EXAMPLE ONE

A fastener member was produced by the process described in U.S. Pat. No. 4,894,060 (Nestegard). Both the base sheet and the engaging members of the fastener member comprised a polypropylene copolymer resin, available from the Shell Chemical Company of Houston, Tex., under the designation SRD 6-166. The base sheet measured approximately 100 mm (4 in) wide, and 0.18 mm (0.007 in) thick, and included a plurality of T-shaped engaging members that projected from the base sheet. Each T-shaped engaging member, an example of which is shown in FIG. 9, measured approximately 0.254 mm (0.010 in) high, and the engaging members were regularly spaced at a density of approximately 66 per square cm (425 per square inch). A layer of hot melt coated pressure sensitive adhesive approximately 0.254 mm (0.010 in) thick was extruded by a single screw extruder onto the base sheet on the major surface opposite the engaging members, at a temperature of approximately 154.5° C. (310° F.). The hot melt adhesive used was a Kraton™ styrene-butadiene-styrene rubber-based adhesive, comprising the following elements:

______________________________________Material       % (by weight)                     Available Through______________________________________Kraton ™ 1118 rubber          19.8%      Shell Chemical Co.                     (Houston, TX)Solprene ™ 1205 Rubber          20.8%      Housemex, Inc.                     (Houston, TX)Piccolyte ™ A135 Resin          48.3%      Hercules, Inc.                     (Brunswick, GA)Shellflex ™ 371 Oil          10.1%      Shell Chemical Co.                     (Houston, TX)Irganox ™ 1076 Antioxidant           1.0%      Ciba Giegy Indus. Chem.                     (McIntosh, TX)______________________________________

The adhesive layer was allowed to cool at room temperature. The dual purpose cover sheet was provided, and was applied to the engaging members. The cover sheet was made of cast polypropylene and coated with a rubber based adhesive on one side, for affixation to the engaging members, and a silicone release agent on the other side, to permit releasable engagement with the pressure sensitive adhesive layer. The cover sheet measured approximately 13.7 cm (4.5 in) wide, and 0.178 mm (0.007 in) thick. A cover sheet of this type is available from the Minnesota Mining and Manufacturing Company under the designation KR-0261.

The fastener member was wound on a core having a silicone release agent on the outer cylindrical surface, such that the adhesive layer adhered the fastener member to the core. As the fastener member was wound on the core, the cover sheet received the pressure sensitive layer of the fastener member above it, as shown generally in FIG. 3. To unwind the roll, the fastener member including the cover sheet was peeled from the core and applied to a surface. To secure an object (such as another fastener member, or a piece of carpet, for example) to the fastener member mounted on the surface, the cover sheet was removed to expose the engaging members. The object could then be releasably attached to the engaging members. The foregoing fastener arrangement was found to perform satisfactorily.

EXAMPLE TWO

A fastener member was prepared as described above with reference to Example One, with the following exceptions. The dual purpose cover sheet number KR-0261 was replaced by a dual purpose cover sheet including a base sheet having protruding nylon tricot loop members, available from the Guilford Mills Co. of Greensboro, N.C., under the designation #31835. The opposite (back) surface of the cover sheet was corona treated with a 400 watt corona treatment station (operating at 13.5 amps, 75 volts, and a frequency of 27 kHz) while travelling at 0.25 m/s (50 ft/min). Following the corona treatment step, the back surface of the cover sheet was coated with approximately 0.05 grains of silicone per 15,000 mm2 (24 in2), to facilitate release of an overlying adhesive layer. The silicone was available from the Dow Chemical Company of Midland, Mich., under the designations #7850 (97.2% by weight) and #7488 (2.8% by weight). The silicone was cured at approximately 107° C. (225° F.) for 15 seconds.

The cover sheet thus prepared was applied to the fastener member described in Example One, with the loop members of the cover sheet engaging with the engaging members of the fastener member. The fastener member and dual purpose cover sheet were wound on a core in the manner described in Example One, and were aged at room temperature for three weeks. The fastener member was found to perform satisfactorily.

It should be noted that the foregoing construction may not be suitable for all applications, because the cover sheet is highly permeable, which allows air flow past the adhesive layer of the fastener member. This air flow can cause some adhesives to lose tack, as is known in the art. Thus, adhesives used with the foregoing construction should be selected to be resistant to the potentially deleterious effects of air flow.

EXAMPLE THREE

A fastener member was prepared as described above with reference to Example One, with the following exceptions. The KR-0261 dual purpose cover sheet was replaced by a biaxially oriented polypropylene film tape cover sheet. The tape cover sheet was prepared with a pressure sensitive adhesive on one surface, for application to the engaging members, and with an LAB coat on the opposite surface, for application to the pressure sensitive adhesive layer of an overlying fastener member. A tape of such a construction is available from the Minnesota Mining and Manufacturing Company, under the designation Highland™ Brand Utility Box Sealing Tape #371.

The adhesive side of the tape cover sheet was applied to the uppermost portions of the engaging members, and thus the LAB side was presented for receipt of the pressure sensitive adhesive layer of an overlying fastener member. The fastener member and the tape cover sheet were thereafter wound on a core in the manner described in Example One, and was aged for one week at room temperature. The fastener member was difficult to unwind, because of the high adhesion between the pressure sensitive adhesive layer of the fastener member and the LAB side of the tape cover sheet. It is believed that the use of a less aggressive adhesive on the fastener member, or a more effective LAB on the cover sheet, would result in better unwinding performance.

EXAMPLE FOUR

A fastener member was prepared as described above with reference to Example One, with the following exceptions. The KR-0261 dual purpose cover sheet was replaced by a base sheet having loop members, comprising a polypropylene copolymer sheet with polypropylene loop members projecting therefrom. The overall thickness of the cover sheet was 1.65 mm (0.065 in), including a base sheet measuring approximately 0.051 mm (0.002 in) thick and loop members measuring approximately 1.6 mm (0.063 in) high. The density of the loop members was approximately 33 g/m2 (0.062 lb/yd2). A product of this general type is particularly described in PCT Patent Publication No. 92/01401.

The surface of the cover sheet opposite the loop members (the back surface) was corona treated with a 400 watt corona treatment station (operating at 13.5 amps, 75 volts, and a frequency of 27 kHz) while travelling at 0.25 m/s (50 ft/min). Following the corona treatment step, the back surface was coated with approximately 0.022 grains of silicone per 15,000 mm2 (24 in2), to facilitate release of an overlying adhesive layer. The silicone was available from the Dow Chemical Company under the designations #7850 (97.2% by weight) and #7488 (2.8% by weight). The silicone was cured at approximately 107° C. (225° F.) for 15 seconds.

The cover sheet thus prepared was applied to the fastener member described in Example One, with the loop members of the cover sheet engaging with the engaging members of the fastener member. The fastener member and dual purpose cover sheet were wound on a core in the manner described in Example One, and were aged at room temperature for three weeks. The fastener member was found to perform satisfactorily.

EXAMPLE FIVE

A fastener member was prepared as described above with reference to Example One, with the following exceptions. The KR-0261 dual purpose cover sheet was replaced by a biaxially oriented polyester film tape cover sheet. The tape cover sheet was prepared with a pressure sensitive adhesive on one surface, for application to the engaging members, and with an LAB coat on the opposite surface, for application to the pressure sensitive adhesive layer of an overlying fastener member. A tape of such a construction is available from the Minnesota Mining and Manufacturing Company, under the designation #353.

The adhesive side of the tape cover sheet was applied to the uppermost portions of the engaging members, and thus the LAB side was presented for receipt of the pressure sensitive adhesive layer of an overlying fastener member. The fastener member and the tape cover sheet were thereafter wound on a core in the manner described in Example One, and was aged for one week at room temperature. The fastener member was difficult to unwind, because of the high adhesion between the pressure sensitive adhesive layer of the fastener member and the LAB side of the tape cover sheet. It is believed that the use of a less aggressive adhesive on the fastener member, or a more effective LAB on the cover sheet, would result in better unwinding performance.

The present invention has now been described with reference to several embodiments thereof. It will be apparent to those skilled in the art that many changes can be made in the embodiments described without departing from the scope of the invention. Thus, the scope of the present invention should not be limited to the structures described herein, but rather by the structures described by the language of the claims, and the equivalents of those structures.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2532011 *Sep 7, 1946Nov 28, 1950Minnesota Mining & MfgLiners and adhesive tapes having low adhesion polyvinyl carbamate coatings
US2717437 *Oct 15, 1952Sep 13, 1955Velcro Sa SoulieVelvet type fabric and method of producing same
US3009235 *May 9, 1958Nov 21, 1961Internat Velcro CompanySeparable fastening device
US3027595 *Apr 18, 1960Apr 3, 1962Takai UnokichiApparatus and method of continuous molding of a thermoplastic sheet having fine pile-like projections
US3138841 *Oct 23, 1962Jun 30, 1964Naimer JackSeparable fastening fabrics
US3147528 *Nov 14, 1961Sep 8, 1964Velcro Sa SoulieSeparable fastener element
US3192589 *Jul 18, 1960Jul 6, 1965Raymond C PearsonSeparable fastener
US3235438 *Dec 1, 1961Feb 15, 1966American Biltrite Rubber CoMolded elastomeric product having integral flexible hair-like filaments
US3270408 *May 4, 1965Sep 6, 1966Nealis Raymond NSeparable interlocking fasteners and method of making them
US3312583 *Oct 2, 1963Apr 4, 1967James J RochlisApertured and staggered molded pile product
US3320649 *Mar 21, 1966May 23, 1967Naimer JackMethods of making separable fastening fabrics
US3353663 *Feb 10, 1966Nov 21, 1967Minnesota Mining & MfgAdherent fasteners
US3408705 *Jul 7, 1966Nov 5, 1968Minnesota Mining & MfgFastener articles
US3413678 *Sep 28, 1966Dec 3, 1968Joris M. KrantzCarpet seam securing device
US3490107 *Oct 16, 1967Jan 20, 1970Brumlik George CHook-like fastening assembly
US3494006 *Jan 12, 1968Feb 10, 1970George C BrumlikSelf-gripping fastening device
US3522637 *Mar 6, 1968Aug 4, 1970George C BrumlikSelf-gripping fastening filament
US3555601 *Jul 30, 1968Jan 19, 1971Harold PriceApparatus for continuously forming conical shaped cleats on a thermoplastic sheet
US3583057 *Jun 9, 1969Jun 8, 1971American Velcro IncApparatus for attaching flexible covers
US3594863 *Jul 10, 1969Jul 27, 1971American Velcro IncApparatus for molding plastic shapes in molding recesses formed in a moving endless belt
US3594865 *Jul 10, 1969Jul 27, 1971American Velcro IncApparatus for molding plastic shapes in molding recesses formed in moving endless wire dies
US3600261 *Dec 26, 1968Aug 17, 1971Girmes Werke AgFlame retarding backing for inflammable webs
US3660191 *Dec 8, 1969May 2, 1972Kendall & CoMethod of carpet seaming
US3708833 *Mar 15, 1971Jan 9, 1973American Velcro IncSeparable fastening device
US3711349 *Jan 28, 1970Jan 16, 1973Commercial AffiliatesTape seaming method
US3718725 *Nov 17, 1970Feb 27, 1973Int Knitlock CorpMethod for making hook fabric material for fasteners
US3762000 *Nov 11, 1971Oct 2, 1973M MenzinProduction of a continuous molded plastic strip
US3773580 *Jul 27, 1971Nov 20, 1973American Velcro IncBonding fastening members to a substrate
US3780479 *Jul 28, 1971Dec 25, 1973Velcro FrancePartitions covered with a facing fabric
US3817015 *Oct 24, 1972Jun 18, 1974J FrangosConvertible floor system
US3849840 *Sep 20, 1973Nov 26, 1974Kanebo LtdMethod for imparting pressure sensitive adhesion to velvet type fasteners
US3858269 *Mar 22, 1973Jan 7, 1975Performance IndustriesTackless carpet stripping
US3863304 *Aug 8, 1973Feb 4, 1975Ingrip FastenersLinear fastening element and method therefore
US3866267 *Jan 14, 1974Feb 18, 1975Raymond Lee Organization IncRugs with detachable sections
US3913183 *Jun 28, 1973Oct 21, 1975Brumlik George CMulti-element gripping device
US4012544 *Jun 12, 1975Mar 15, 1977Milliken Research CorporationDust collection mat and method of manufacture
US4024003 *May 27, 1975May 17, 1977Patax Trust Reg.Method of making pile fabrics with deformed pile-thread ends
US4041667 *Oct 15, 1973Aug 16, 1977Lindner Robert LWall assembly
US4056593 *Jun 21, 1974Nov 1, 1977Repla International S.A.H.Method of making a fastener
US4090335 *Sep 14, 1977May 23, 1978Frank CuratoloPartition panel for subdividing a room area
US4114346 *Sep 28, 1977Sep 19, 1978Gaf CorporationMethod and product for installation of sheet flooring
US4169303 *Nov 24, 1976Oct 2, 1979Lemelson Jerome HFastening materials
US4216257 *Apr 20, 1979Aug 5, 1980Minnesota Mining And Manufacturing CompanyPressure sensitive adhesive, low density closed-cell foam, u-shaped headed monofilaments
US4263755 *Oct 12, 1979Apr 28, 1981Jack GlobusAbrasive product
US4290174 *Jan 13, 1978Sep 22, 1981Minnesota Mining And Manufacturing CompanySeparable fastener and article for making same
US4290832 *Sep 2, 1977Sep 22, 1981Minnesota Mining And Manufacturing CompanyMethod for making fasteners
US4315885 *Aug 22, 1979Feb 16, 1982Lemelson Jerome HContinuous molding apparatus and method
US4322875 *Mar 31, 1980Apr 6, 1982Minnesota Mining And Manfacturing CompanyTwo strip materials used for forming fasteners
US4336289 *Jul 6, 1981Jun 22, 1982Davis Edward LProduct and method of forming patterned areas in a pile rug
US4350721 *Nov 17, 1981Sep 21, 1982Nagase Rubber Co., Ltd.Automatic matching of court lines
US4361610 *Mar 17, 1980Nov 30, 1982The 2500 CorporationBacking of boar bristles to mesh with automobile carpet
US4405668 *Dec 10, 1982Sep 20, 1983Lewis J. McDermott, IIIReleasable
US4410327 *Apr 9, 1981Oct 18, 1983Laboratories (South Africa)(Proprietary) Ltd.Diaper
US4437269 *Aug 5, 1980Mar 20, 1984S.I.A.C.O. LimitedAbrasive and polishing sheets
US4454183 *Oct 20, 1983Jun 12, 1984Minnesota Mining And Manufacturing CompanyStrip material with heat-formed hooked heads
US4531634 *Dec 27, 1983Jul 30, 1985Jung Chi LaiInstant VELCRO assembly
US4536244 *Jul 2, 1984Aug 20, 1985Orcon CorporationMethods and apparatus for locking the facing edges of carpet backings directly together at the seam during a face seaming operation with a hot melt adhesive tape
US4557774 *Sep 4, 1984Dec 10, 1985Jac Tac, Inc.Urethane pad with pressure-sensitive adhesive strips
US4563380 *Aug 31, 1984Jan 7, 1986Minnesota Mining And Manufacturing CompanyFastener assembly with improved temporary attachment layer
US4581269 *May 22, 1984Apr 8, 1986Minigrip, Inc.Means for anchoring carpeting or the like, and a method of and apparatus for making the same
US4581274 *Aug 6, 1984Apr 8, 1986Allied CorporationPerforated nylon bonded to pad; minimal noise
US4635418 *Dec 3, 1984Jan 13, 1987Hobgood Charles MPortable partition wall system
US4647484 *Jun 13, 1983Mar 3, 1987Milliken Research CorporationCarpet underlay
US4653582 *May 22, 1985Mar 31, 1987Treco Products, Inc.Point indicating system for combat sports
US4665909 *Oct 15, 1985May 19, 1987Avcor Health Care Products, Inc.Bandage
US4671976 *Aug 13, 1986Jun 9, 1987Vidal Stella MPrevention of hair from entering and clogging drain pipes in showers, tubs, sinks
US4673603 *Nov 5, 1984Jun 16, 1987The 2500 CorporationFloor mat mounting system
US4699622 *Mar 21, 1986Oct 13, 1987The Procter & Gamble CompanyDisposable diaper having an improved side closure
US4706914 *Jul 25, 1986Nov 17, 1987Minnesota Mining And Manufacturing CompanyAttaching assembly
US4707893 *May 2, 1986Nov 24, 1987Kanebo Bell-Touch, Ltd.Fabric fastener
US4710414 *Jul 10, 1984Dec 1, 1987Minnesota Mining And Manufacturing CompanyFor upholstering
US4716065 *Nov 10, 1986Dec 29, 1987Mclaughlin John JUnderlying pad for attaching removable automobile carpet
US4755401 *Feb 2, 1987Jul 5, 1988J. F. Adolff AgArtificial turf with playing field markings
US4758457 *Feb 24, 1987Jul 19, 1988The 2500 CorporationFloor mat with integral retainer means
US4761318 *Aug 29, 1986Aug 2, 1988Minnesota Mining And Manufacturing CompanyLoop fastener portion with thermoplastic resin attaching and anchoring layer
US4769895 *Jan 7, 1988Sep 13, 1988Milliken Research CorporationInterlocking dust control mats
US4775310 *Apr 25, 1986Oct 4, 1988Velcro Industries B.V.Apparatus for making a separable fastener
US4784890 *Oct 16, 1987Nov 15, 1988Minnesota Mining And Manufacturing CompanyFastener assembly with peripheral temporary attachment layer
US4810546 *Oct 6, 1987Mar 7, 1989Mclaughlin John JGeneral floor carpet with flush removable section
US4814036 *Sep 17, 1987Mar 21, 1989Velcro Industries B.V.Method for adapting separable fasteners for attachment to other objects
US4819309 *Aug 27, 1987Apr 11, 1989Minnesota Mining And Manufacturing CompanyFastener with parts having projecting engaging portions
US4822658 *Dec 23, 1987Apr 18, 1989Pacione Joseph RCarpet backing and installation system
US4824498 *Jul 9, 1987Apr 25, 1989James River CorporationMultilayer laminate
US4857371 *Mar 20, 1987Aug 15, 1989Morgan Adhesives CompanyMethod of making an adhesive construction for articles and said articles
US4870725 *Jan 15, 1988Oct 3, 1989Velcro Industries B.V.Pop-through touch fastener
US4872243 *Sep 9, 1988Oct 10, 1989Velcro Industries B.V.Multi-hook fastener member
US4875259 *Mar 24, 1988Oct 24, 1989Minnesota Mining And Manufacturing CompanyIntermeshable article
US4881997 *Jan 24, 1989Nov 21, 1989Velcro Industries. B.V.Such as seat cushions by adhesives or by attachment to plastic foam objects during molding or formation
US4894060 *Jan 11, 1988Jan 16, 1990Minnesota Mining And Manufacturing CompanyDisposable diaper with improved hook fastener portion
US4897891 *Oct 21, 1988Feb 6, 1990Kallman Robert ADust Ruffles for a bed with an improved fastener system
US4909883 *Jun 23, 1988Mar 20, 1990Robert AdellInstallation of non-metallic door edge guards
US4910062 *Jul 17, 1989Mar 20, 1990Minnesota Mining And Manufacturing CompanyPolymeric base yarn having intersecting portions; forming backing and pile yarn
US4921742 *May 27, 1988May 1, 1990The 2500 CorporationFloor mat retention system for automotive vehicles
US4931343 *Jan 22, 1988Jun 5, 1990Minnesota Mining And Manufacturing CompanySheet material used to form portions of fasteners
US4933224 *Nov 25, 1987Jun 12, 1990Velcro Industries, B.V.Method for adapting separable fasteners for attachment to other objects
US4959265 *Apr 17, 1989Sep 25, 1990Minnesota Mining And Manufacturing CompanyPressure-sensitive adhesive tape fastener for releasably attaching an object to a fabric
US4974384 *Nov 7, 1988Dec 4, 1990Tac-Fast System SaStructural assembly system
US5032122 *May 17, 1989Jul 16, 1991The Procter & Gamble CompanyLoop fastening material for fastening device and method of making same
US5040275 *Jun 1, 1990Aug 20, 1991Minnesota Mining And Manufacturing CompanyStrip material used for forming fasteners
US5042221 *Mar 28, 1989Aug 27, 1991Tac-Fast Systems SaApparatus for applying wall covering and wall covering
Non-Patent Citations
Reference
1 *Dominick V. Rosato, PE and Donald V. Rosato, PhD (eds), Injection Molding Handbook, pp. 504 506, 596, 619 621, 752 754, and 756; Van Nostrand Reinhold Company, New York, 1986.
2Dominick V. Rosato, PE and Donald V. Rosato, PhD (eds), Injection Molding Handbook, pp. 504-506, 596, 619-621, 752-754, and 756; Van Nostrand Reinhold Company, New York, 1986.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5786062 *May 27, 1997Jul 28, 1998Minnesota Mining And Manufacturing CompanyAttachment strips
US6569374 *Oct 24, 2000May 27, 2003Gottlieb Binder Gmbh & Co.Method for producing an adhesive closing component
US6743213 *Mar 1, 1999Jun 1, 2004Uni-Charm CorporationDisposable diaper having mechanical fastening system
US6797353Nov 2, 2000Sep 28, 2004Tac-Fast Georgia, L.L.C.Covering module and anchor sheet
US6802167 *Jan 23, 2002Oct 12, 2004Tac-Fast Georgia, L.L.C.Anchor sheet framework and subflooring
US6827893Mar 14, 2001Dec 7, 2004Velcro Industries B.V.Folded fastener products
US6855221 *Jun 9, 2000Feb 15, 2005Henkel Kommanditgesellschaft Auf AktienUse of a film with anchoring elements for a mechanic fixation
US7096632Dec 7, 2001Aug 29, 2006Joseph Rocco PacioneAnchor sheet and attachment devices
US7185465Jun 25, 2004Mar 6, 2007Tac-Fast Georgia, L.L.C.Covering module and anchor sheet
US7185473Apr 2, 2001Mar 6, 2007Tac-Fast Georgia, L.L.C.Anchor sheet and anchor sheet module
US7194843Oct 7, 2002Mar 27, 2007Tac-Fast Georgia, LlcAnchor sheet and anchor sheet module
US7383663 *Feb 25, 2005Jun 10, 2008Tac-Fast Georgia LlcAnchor sheet and attachment devices
US7394039Oct 6, 2006Jul 1, 2008Fujitsu Component LimitedKeyboard and membrane switch for keyboard
US7412806Dec 13, 2001Aug 19, 2008Tac-Fast Georgia LlcStructures for creating spaces while installing anchor sheet and attachment piece subfloors
US7464510 *Dec 21, 2004Dec 16, 2008Interface, Inc.System and method for floor covering installation
US7721502Oct 17, 2005May 25, 2010Interface, Inc.System and method for floor covering installation
US7879168 *Jan 29, 2004Feb 1, 2011Tac-Fast Georgia L.L.C.Ultrasonic welding of resilient layers to plates
US7980040Jan 29, 2004Jul 19, 2011Tac-Fast Georgia L.L.C.Anchor sheet positioning and connection system
US8037629 *May 11, 2007Oct 18, 2011Truck Ads, LlcDisplay panel mounting system and method
US8220221Feb 9, 2010Jul 17, 2012Interface, Inc.System and method for floor covering installation
US8276243May 22, 2009Oct 2, 2012Panduit Corp.Hook and loop tie with a non-slip area
US8381473Nov 13, 2008Feb 26, 2013Interface, Inc.System and method for floor covering installation
US8425998 *Feb 9, 2008Apr 23, 2013Gottlieb Binder Gmbh & Co. KgFixing system
US8434282Aug 27, 2012May 7, 2013Interface, Inc.System for carpet tile installation
US8468771Oct 6, 2009Jun 25, 2013Interface, Inc.System and method for floor covering installation
US8468772Jun 14, 2010Jun 25, 2013Interface, Inc.Carpet tiles and carpet tile installations
US8668973 *Dec 8, 2010Mar 11, 2014Kevin F. LohmeierThree part laminated construction
US8691360 *Jul 15, 2008Apr 8, 2014Tac-Fast Georgia L.L.C.Structures for creating spaces while installing anchor sheet and attachment piece subfloors
US8701252Dec 1, 2010Apr 22, 2014Panduit Corp.Hook and loop tie with a non-slip area
US20100000055 *Feb 9, 2008Jan 7, 2010Konstantinos PoulakisFixing system
US20100319167 *May 1, 2009Dec 23, 2010Chittaranjan Narandas NirmelVersatile hook-and-loop fastener system
US20110135876 *Dec 8, 2010Jun 9, 2011Lohmeier Kevin FThree part laminated construction
US20120011795 *Mar 16, 2010Jan 19, 2012Joseph Rocco PacioneCovering module
EP1527719A2 *Jun 7, 2000May 4, 2005Tac-Fast Systems S.A.Anchor sheet attachment devices
Classifications
U.S. Classification428/100, 428/352, 24/450, 428/40.1, 428/906, 428/41.8, 428/41.7, 428/99, 428/354, 24/448, 24/306, 428/101, 428/86, 24/442
International ClassificationA44B18/00, A47G27/04
Cooperative ClassificationA44B18/0003, A47G27/0437, Y10S428/906, A44B18/0069
European ClassificationA47G27/04C, A44B18/00C, A44B18/00G
Legal Events
DateCodeEventDescription
Jan 24, 2006FPExpired due to failure to pay maintenance fee
Effective date: 20051125
Nov 25, 2005LAPSLapse for failure to pay maintenance fees
Jun 15, 2005REMIMaintenance fee reminder mailed
Mar 29, 2001FPAYFee payment
Year of fee payment: 4
Aug 18, 1998CCCertificate of correction